Journal ArticleDOI
2‐Substituted 3‐dimethylamino‐ and ‐3‐cyanopropenoates in the synthesis of heterocyclic systems
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This article is published in Journal of Heterocyclic Chemistry.The article was published on 1999-11-01. It has received 57 citations till now.read more
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[2+2] Cycloaddition of Electron-poor Acetylenes to Enaminones, Enamino Esters and Related Systems. Rearrangements and Ring-expansion Reactions
TL;DR: The cycloaddition of alkenes to alkynes represents an important strategy for the synthesis of cyclobutene derivatives and consequently of polysubstituted 1,3-butadiene derivatives as mentioned in this paper.
Journal ArticleDOI
Studies with enaminones: Formation of a N,O‐cyclicacetal on coupling of 3‐dimethylamino‐1‐hydroxyphenyl‐2‐propenone with arenediazonium salts
TL;DR: In this paper, the title compound 3 with arenediazonium salts affords the arylhydrazonochromones 6 and the latter compounds react with hydrazine hydrate to yield novel pyrazoles 11.
Journal ArticleDOI
Synthesis of 4-(2-hydroxy-1-methyl-5-oxo-1H-imidazol-4(5H)-ylidene)-5-oxo-1-aryl-4,5-dihydro-1H-pyrrole-3-carboxylates, a new triazafulvalene system
TL;DR: In this paper, the triazafulvalene system was used to obtain derivatives of triazefvalene systems with aromatic or hetero-aromatic amines by cycloaddition of (5Z)-5]-(dimethylamino)methylene]-3methylimidazolidine-2,4-dione.
Journal ArticleDOI
Synthesis of 3-benzyl-or 3 -benzoyl -7,8 -dihydro -6H -chromene derivatives starting from Baylis-Hillman adducts
TL;DR: In this article, the exodouble bond of 4a was isomerized in its endo-position by treatment with DMAP (4,4-dimethylaminopyridine) in refluxing p-xylene to give 5a in 89% yield.
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Temperature controlled condensation of nitriles: efficient and convenient synthesis of β-enaminonitriles, 4-aminopyrimidines and 4-amidinopyrimidines in one system
TL;DR: In this paper, a series of β-enaminonitriles, 4-aminopyrimidines and 4-amidinopyridines were synthesized by condensation of organonitriniles in one system.
References
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Journal ArticleDOI
Recent developments in the stereoselective synthesis of α-aminoacids
Journal ArticleDOI
Didehydroamino acids (DDAA) and didehydropeptides (DDP)
TL;DR: A survey of Didehydroamino acids can be found in this paper, where synthesis, reactions, and spectroscopic investigations in the field of DIDEH amino acids are reviewed.
Journal ArticleDOI
Neue natürliche Aminosäuren
TL;DR: In this paper, alle wesentlichen Beitrage und Anderungen zur Kenntnis uber das naturliche Vorkommen von Aminosauren zusammenfassend darzustellen.
Journal ArticleDOI
Aminoacids in the synthesis of heterocyclic systems. The synthesis of methyl 2‐acetylamino‐3‐dimethylaminopropenoate and 2‐(N‐methyl‐N‐trifluoroacetyl)amino‐3‐dimethylaminopropenoate and their application in the synthesis of heterocyclic compounds
TL;DR: Methyl (Z)-2-acetylamino-3-dimethylaminopropenoate (3) was shown to be a versatile reagent in the synthesis of various heterocyclic systems as discussed by the authors.
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